6. She criticizes you

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Successful men need their integrity and their self-esteem intact. Believing you can do something and building the momentum to actually go and do it is by far the more difficult proposition. If your girlfriend is willing to criticize you in such a way that it cuts so deeply into such an important part of your successful psyche, then that's a definite deal breaker. You may be tempted to let the first one go, but the longer you let that sort of behavior go unchallenged, the more degraded your self-esteem will be when you let her go.